Knife blade



FIG. 1 is a left side elevational view of a knife blade with the knife handle depicted in phantom lines which forms no part of the claimed design for this invention, the right, opposite side of which is substantially a mirror image thereof;

FIG. 2 is a front end elevational view of the knife blade of FIG. 1;

FIG. 3 is a rear end elevational view of the knife blade of FIG. 1;

FIG. 4 is a top plan view of the knife blade of FIG. 1; and,

FIG. 5 is a bottom plan view of the knife blade of FIG. 1.

The broken lines shown are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a knife blade, as shown and described. 